David samuels and leonhaedt beeidenstely



No' 341,056 COPYING PRESS.

l Patented May 4, 1886 IIIIIIIIIIIIIIIIIIIIUIIIIIIIIIIIIIIIIII III INM@

HIM"numummllllml" k ummmmnm|||||luIIIIIIIIIIIIIIIIIHW UNITED STATES PATENT OFFICE.

DAVID SAMUELS AND LEONHARDT ,BREIDENSTEIM OF SAN FRANCISCO, CAL.

- COPYING-PRESS.

SPECIFICATION forming part of Letters Patent No. 341,056, dated May 4, 1886.

Application/filed September 9, 1885. Serial No. 176,637. (No model.)

To all whom it may concern.-

Be it known that we, DAVID SAMUELS and LEONHARDT BREIDENSTEIN, both of the city and county of San Francisco, State of California, have invented an Improvement in Copying-Presses; and we hereby declare the following to be a full, clear, and exact description of the same.

Our invention relates to that class of copying or letter presses in which a roll or rollers are employed to effect the necessary and equal pressure upon the copying-book which passes under 0r between them; and our invention consists in the devices hereinafter described and claimed.

Referring to the accompanying drawings, Figure l is a perspective view of our copyingpress. Fig. 2 is a perspective view of a copying-press, showing a feed-roller in addition to the p ressnre-roller.

A is the bed-frame, on the sides of which are secured springs B, the loose ends of which have a normal tendency to lie dat against the bed.

C are side frames secured at their bases to the free ends of the springs B, whereby they are held down to the bed-frame. The upper portion of the side frames is longitudinally-slotted and receives the ends or journals of the roller D. Upon the inner surface of the side frames are formed or attached horizontal racks E, and on the roller-shaft are fixed pinions F, which mesh with`and travel on the racks E. The ends of the roller projecting outside of the frames O are provided -With a crank or cranks, G.

The operation of the press is as follows: The copying-book I-I is of the usual pattern, containing a number of leaves of tissue-paper, between which theletter is placed. The book is laid upon the bed-frame A, and the roller D is caused to travel over it. The book being of a thickness greater than the distance which normally exists between the roller and the bed-frame, said roller must necessarily rise sufficiently to allow the book to lie under it. This vertical adjustment is provided for by the lat springs B, which also exercise the necessary pressure and cause the roller to bear on the book in its passage over it. This pressure, it will be observed, is a constant one, and

is regulated in force according to the thickness of the letter-book. It needs no' adjustment, as would be the case if screws were employed, but,on the contrary,the adjustment is entirely automatic and the pressure is constant.

In Fig. 2 weshow apress whichinvolves the same principle of the automatically-adj ustable roller; but this press is somewhat different in shape,being made smaller and having a feedrol1er,D,in the vertical plane of and under the pressure-roller. The purpose of this press is to feed the book under the pressure-roller, instead of causing said roller to travel over the book, as in the previous case. It will be observed that the pressure-roller is mounted in the side frames, O, which are pivoted to the bed-frame at a, and are held down by springs B. The book is placed on the bed-frame, and is fed between the two rollers, the upper one of which is pressed down upon it under the influence of the springs B. By thus passing the book between the rollers we are enabled to make a much more compact press.

I are small clamps by which the press can be secured to the desk or table.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. A copying or letter press comprising the bed-frame A, the pressure roller D, above the independent side frames, O, in which the pressure-roller is mounted, and the springs B on the bed-frame and attached to the side frames in such a manner as to hold said frames down to the bed-frame, substantially as herein de.- scribed.

2. A letter or copying press comprising the bed-frame A, the independent slotted side frames C, the springs B, holding said frames down, the pressure-roller D, mounted in the slots ol' said frame and having a crank or cranks on its ends, the racks E on the side frames, and the pinions F on the roller-shaft, substantially as herein described.

In witness whereof we have hereunto set our hands. j

DAVID SAMUELS. LEON HARD'I BREIDENSTEIN.

Witnesses:

S. H. NoURsE, H. C. LEE. 

